Please help, something is seriously wrong

Hi,
well something is really wrong,
see i am the admin on this computer, but i cant access the control panel anymore, it has disappeared, and when i run control.exe it still doesnt work, say cant access not enough priveleges, contact admin, but i am admin

If i open in safe mode and go to the windows admin account the control panel works, and its says that my account is admin so i dont know whats going on

Its a reasonably good computer and i brought it first hand so there no way someone else has changed it before hand

Is there a pop-up window telling you to buy/download a security application? If yes, you definitely have a rogueware infection. Download and install SuperAntiSpyware Free. Update it and then scan. If you problems updating online, download the latest definitions here and update manually.

Manual Definition Updates

If you would like to manually update your definitions simply exit SUPERAntiSpyware, then click the "Download" links above and copy the files to your Application Data\SUPERAntiSpyware.com\SUPERAntiSpyware folder, unzip them, and restart SUPERAntiSpyware. To unzip files in Windows XP, simply right-click on the file and select the "Extract All..." option from the menu. To automatically update, simply click the "Check for Updates" button on the SUPERAntiSpyware main application screen.

For Windows 2000/XP/2003/Media Center the folder is typically located here:
C:\Documents and Settings\<USERNAME>\Application Data\SUPERAntiSpyware.com\SUPERAntiSpyware

For Windows 98/ME the folder is typically located here:
C:\Windows\Application Data\SUPERAntiSpyware.com\SUPERAntiSpyware

Click to expand...

The starter of this thread has the same problem. Like him, try posting a hijackthis log here.

Is it only the control panel you cannot acces? How are the other 'Admin-privileges'?

If it is only the control panel you can't access, use your Windows Explorer, open C:Windows\System32, look for 'control.exe'.

If 'control.exe' isn't present in C:\windows\system32 you can download the control.exe from here (Note: This is a direct download-link!)
After downloading, unzip it first into the folder C:\WINDOWS\System32\dllcache (overwriting any existing copy), then into the folder C:\WINDOWS\System32.
Then reboot your computer.

Also you can take a look at the Userprofiles
(Rightclick This Computer => Properties => Advanced => UserProfiles -> Settings)
Do you see something strange? An unknown account?